I think the vast majority of this "psychic" is total bullshit. All these people that claim to be able to bend spoons with their minds or spin little paper windmills that are behind a semicircle of glass are only fooling themselves.
I was interested in this a few months ago, and made it a point to ask people if they believed I had psychic abilities after two of the magic tricks I do in my routine. One of them is basically just a classic force, and the other is a metal-bending trick which just involves clever misdirection and a basic understanding of torque. A LOT of people told me that they legitimately believed that I had some sort of supernatural ability. And by a lot I mean at least 10%.
The difference between me and "psychics" is that I realize that what I'm doing has a legitimate explanation, and I knowingly deceive other people with it for entertainment purposes whereas the "psychics" only deceive themselves and attempt to prove it to other people. I'll be the first to admit that Kreskin was undoubtedly one of the best mentalists of all time, and what he did was truly mind-boggling and beyond comprehension, but it was not beyond explanation. I don't pretend to be able to explain how these performers do what they do, but it's not science fiction. Whether you call it "energy" or a "life-force" or "chi", it's really just something that you don't understand and are trying to label. I've met a "pyschic" in Russia that correctly described many aspects to my life and personality. However, when I probed for details, she got almost every one wrong. There are tricks and methods to doing things that most people would never guess or even understand, but that doesn't make them supernatural.
However, to end on a lighter note, everything we do is controlled my our minds, and everything we do affects everyone else in the world eventually in some way. It can be as obvious as being the guy to miss a defect in a valve that ends up being responsible for the explosion of an oil rig that gains world-wide news coverage and has devastating effects on the environment, or it may be that your decision to bike to work saved the life of somebody who would have otherwise been killed in a car accident, and everybody connected to that person would have been harshly effected. Think about it. Literally every decision you make branches out and affects everyone else. So really, if being "psychic" means controlling things with your mind, aren't we all?